Preparation of a Carbon-Based Solid Acid with High Acid Density via a Novel Method

DOI: 10.4236/msce.2014.26002   PDF   HTML     3,638 Downloads   5,007 Views   Citations


A carbon-based solid acid with high acid density was successfully prepared using camphor tree branches as raw materials through a novel method including dilute sulfuric acid activation, carbonization in refluxing solvent and sulfonation. Physical characterization was detected to show that the carbon-based acid is amorphous with polycyclic aromatic carbon sheets attached plentiful -OH, -COOH, and -SO3H groups. The sulfonic acid density and total acid density of it reached 2.05 mmol·g-1 and 5.63 mmol·g-1, respectively by acid-base titration. As a solid acid catalyst, it showed excellent performance in the ketalization of cyclohexanone with glycol.

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Ouyang, S. , Kuang, X. , Xu, Q. and Yin, D. (2014) Preparation of a Carbon-Based Solid Acid with High Acid Density via a Novel Method. Journal of Materials Science and Chemical Engineering, 2, 4-8. doi: 10.4236/msce.2014.26002.

Conflicts of Interest

The authors declare no conflicts of interest.


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